Article
Engineering, Environmental
Manuel Gruber, Denis Wiedmann, Manuel Haas, Stefan Harth, Alexandra Loukou, Dimosthenis Trimis
Summary: This article presents a simulation-based analysis of experimental results of the methanation of CO2 in a catalytic fixed-bed reactor. The study developed a numerical characterization method based on temperature profiles and reactant conversions, systematically investigating parameters like heat transfer coefficients. A simple numerical method for determining the effective heat conductivity of the bed in binary bidisperse fixed-beds was introduced. The study also highlighted the challenges of modeling effective reaction rates in industrial sized catalysts and reactors, emphasizing the interlinking aspects and presenting a step-by-step analysis to understand the complex process. The results showed excellent agreement between experiments and numerics, providing deep insights into the methanation process in a cooled fixed-bed reactor.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
P. Aragues-Aldea, A. Sanz-Martinez, P. Duran, E. Frances, J. A. Pena, J. Herguido
Summary: This study successfully demonstrated the effect of distributed feeding on the methanation of CO2, improving the selectivity towards CH4 and enhancing the overall process performance.
Article
Chemistry, Physical
Wei Zhang, Yixiong Lin, Koyo Norinaga
Summary: This study evaluates the CO2 methanation process using a radial flow reactor and compares four different configurations. The fluid flow, heat transfer, and reaction performances of these reactors are discussed under consistent operating conditions. The results show that the centrifugal P-type structure has the most uniform flow field, while the centripetal Z-type structure performs the best in terms of heat transfer and reaction performance. These findings provide a theoretical basis and technical guidance for designing and developing radial flow reactors.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
Son Ich Ngo, Young-Il Lim, Doyeon Lee, Myung Won Seo, Sungwon Kim
Summary: This study investigated the hydrodynamics, reaction kinetics, and heat transfer of a bench-scale bubbling fluidized bed reactor for CO2 methanation. The study successfully identified the effects of hydrodynamics and reaction kinetics on heat transfer coefficient in the reactor.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Chemistry, Multidisciplinary
Maxime Hervy, Jonathan Maistrello, Larissa Brito, Mathilde Rizand, Etienne Basset, Yilmaz Kara, Marion Maheut
Summary: CO2 methanation tests were conducted in a demonstration scale fluidized bed reactor to investigate its efficiency and flexibility in Power-to-Methane production. The technology showed excellent performance in achieving maximum conversion in one step under various operating conditions. Efficient management of methanation exothermicity and optimized catalyst activity contributed to the reactor's high flexibility and quick stabilization time for permanent operation.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Chemistry, Applied
Tom Winkler, Fabien Baccot, Kari Eranen, Johan Warna, Gerd Hilpmann, Rudiger Lange, Markus Peurla, Irina Simakova, Henrik Grenman, Dmitry Yu Murzin, Tapio Salmi
Summary: Formic acid plays a crucial role in green chemistry, and this study investigates its decomposition reaction in a fixed bed reactor. The catalyst, consisting of palladium nanoparticles deposited on porous active carbon, shows good stability. The experimental data can be well described by a multistep adsorption-decomposition model.
Article
Thermodynamics
Yanxiang Du, Jin Liang, Shiliang Yang, Jianhang Hu, Guirong Bao, Hua Wang
Summary: This study simulated the CO methanation process in a three-dimensional bubbling fluidized bed using the reactive multiphase-particle-in-cell method. The model considers the hydrodynamics, chemical reactions, and heat and mass transfer between gas and catalyst. The results showed that the CO methanation mainly occurred in the dense phase region, and the gas inlet velocity and operating temperature had a significant effect on the heat transfer coefficient of the catalyst particles. Additionally, the ratio of CO/H2 had an inverse relationship with the gas production of CH(4).
Article
Chemistry, Physical
Christos Chatzilias, Eftychia Martino, Constantinos G. Vayenas, Georgios Kyriakou, Alexandros Katsaounis
Summary: This study demonstrates a method to effectively promote catalytic reactions using limited power generated by low-temperature fuel cells, reducing energy consumption and environmental impact. By designing a novel low-temperature fuel cell reactor and utilizing internal power, electrochemical promotion of CO2 hydrogenation has been achieved.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Green & Sustainable Science & Technology
Frederico G. Fonseca, Ana P. Soares Dias
Summary: This study investigated the potential of almond shells as a biomass for catalytic pyrolysis bio-oil, and found that the use of catalysts can significantly increase the bio-oil yield and quality. Cenospheres, waste streams from coal power plants, showed great promise as low-cost catalysts for biomass pyrolysis processes.
Article
Engineering, Environmental
Huong Lan Huynh, Wakshum Mekonnen Tucho, Qi Shen, Zhixin Yu
Summary: The study focuses on the formation of hot-spots in CO2 methanation bed reactors and finds that the presence of hot-spots significantly increases methane yield. Optimizing bed packing configuration and utilizing hot-spot formation can enhance CO2 methanation performance at low temperatures.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Youngmin Jeong, Jonghyun Park, Myungwan Han
Summary: The power-to-gas (PTG) process involves transforming renewable electric energy into methane through electrolysis and methanation. Critical issues in the process include the fluctuating nature of renewable electric energy and the safe operation of the methanation reactor. A cooled recycle reactor with a multilayered catalyst is proposed for methanation, aiming to improve efficiency and flexibility but also posing design and control challenges.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Engineering, Environmental
Akash Bhimrao Shirsath, Mariam L. Schulte, Bjarne Kreitz, Steffen Tischer, Jan-Dierk Grunwaldt, Olaf Deutschmann
Summary: CO2 methanation via the Sabatier reaction using green H2 is a promising technique for achieving carbon-neutral energy balance. Nickel-based catalysts, due to their low cost and high activity, are commonly used. This study combined numerical simulations with microkinetics and mass transport limitations to compare the performance of two catalysts at different temperatures. Incorporating spectroscopy studies, the importance of integrating modeling with experiments was demonstrated to improve accuracy in multiscale models.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Shilin Du, Songbo Mao, Feiqiang Guo, Kaiming Dong, Rui Shu, Jiaming Bai, Liya Xu, Dong Li
Summary: Developing low-cost and high-performance catalysts for biomass pyrolysis is important. In this study, coal gangue was used to prepare a char-supported catalyst for biomass catalytic pyrolysis. The addition of coal gangue char affected the pyrolysis behavior and kinetics of pine, resulting in lower activation energies and decreased tar yield. The catalytic performance of coal gangue char on tar cracking was confirmed by the improved yield of H-2 and CO.
Article
Engineering, Environmental
Florian Kiefer, Marin Nikolic, Andreas Borgschulte, Panayotis Dimopoulos Eggenschwiler
Summary: This study investigates the production of synthetic methane as a substitute for natural gas. The results show that high conversion at low pressure can be achieved through sorption enhancement at laboratory scale. However, heat generation in the reactor remains a major challenge in large-scale reactors.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Sarvenaz Farsi, Shengzhi Liang, Peter Pfeifer, Roland Dittmeyer
Summary: This work aims to analyze the performance of an advanced packed-bed reactor with evaporation cooling structure and high reactant throughput, utilizing pressurized water as the cooling medium. The study evaluates the reactor performance under various process conditions and investigates the influence of feed throughput and composition on reactor operation. The modelling results successfully predict experimental data regarding temperature profiles and product compositions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Chemical
Son Ich Ngo, Young-Il Lim, Byung-Ho Song, Uen-Do Lee, Jeung-Woo Lee, Jae-Hun Song
Article
Engineering, Chemical
Son Ich Ngo, Young-Il Lim, Moon-Heui Hahn, Jaeho Jung
CHEMICAL ENGINEERING SCIENCE
(2018)
Article
Thermodynamics
Thanh D. B. Nguyen, Son Ich Ngo, Young-Il Lim, Jeong Woo Lee, Uen-Do Lee, Byung-Ho Song
ENERGY CONVERSION AND MANAGEMENT
(2012)
Article
Energy & Fuels
Thuy Thi Le, Son Ich Ngo, Young-Il Lim, Chi-Kyun Park, Byung-Don Lee, Byung-Gook Kim, Dong-Ha Lim
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2018)
Article
Engineering, Chemical
Son Ich Ngo, Young-Il Lim, Byung-Ho Song, Uen-Do Lee, Chang-Won Yang, Young-Tai Choi, Jae-Hun Song
Article
Chemistry, Physical
Dan Duc Nguyen, Son Ich Ngo, Young-Il Lim, Woohyun Kim, Uen-Do Lee, Dongju Seo, Wang-Lai Yoon
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Engineering, Marine
Thuy Thi Le, Son Ich Ngo, Young-Ii Lim, Chi-Kyun Park, Byung-Don Lee, Byung-Gook Kim, Dong-Ha Lim
Article
Energy & Fuels
Son Ich Ngo, Young-Il Lim, Woohyun Kim, Dong Joo Seo, Wang Lai Yoon
Article
Chemistry, Multidisciplinary
Hung Hai Pham, Young-il Lim, Son Ich Ngo, Yun-Hyuk Bang
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2019)
Article
Engineering, Chemical
Son Ich Ngo, Young-Il Lim, Soo-Chan Kim
Article
Engineering, Chemical
Bay V. Tran, Dan D. Nguyen, Son I. Ngo, Young-Il Lim, Bongjun Kim, Dong Hyun Lee, Kang-Seok Go, Nam-Sun Nho
Article
Chemistry, Physical
Byungwook Hwang, Son Ich Ngo, Young-Il Lim, Myung Won Seo, Sung Jin Park, Ho-Jung Ryu, Hyungseok Nam, Doyeon Lee
Summary: This study investigates the CO2 methanation performance of a Ni/Al2O3 catalyst in a bubbling fluidized bed, and proposes a modified reaction kinetic model. The experimental results show that the Ni/Al2O3 catalyst has the highest CO2 conversion at 320 degrees C.
Review
Engineering, Chemical
Son Ich Ngo, Young-Il Lim
Article
Computer Science, Interdisciplinary Applications
Son Ich Ngo, Young-Il Lim, Moon-Heui Hahn, Jaeho Jung, Yun-Hyuk Bang
COMPUTERS & CHEMICAL ENGINEERING
(2017)